Line rental is the charge you pay for an active phone line into your home. The reason we're able to offer such a great value broadband service is that we own our own telephone lines. If we were to use BT's lines, say, we'd incur additional costs. Which would affect our prices. So a TalkTalk broadband and phone package includes line rental as well.
And that means one simple, calls-and-rental bill. It makes things so much easier: there's only one point of contact. So in the unlikely event of a problem, you'll always know who to call.